.fontSize(@fontSize) {
	font-size: round(@fontSize / 2) * 1px;
	[data-dpr = "2"] & {
		font-size: @fontSize * 1px;
	}
	[data-dpr = "3"] & {
		font-size: round(@fontSize / 2 * 3) * 1px;
	}
	[data-dpr = "4"] & {
		font-size: round(@fontSize * 2) * 1px;
	}
}
.bgImgContain {
	background-size: contain;
	background-repeat: no-repeat;
	background-position: center center;
}
.bgImg(@url, @suffix: ".png") {
	background-image: url("../../static/img/@{url}_@2x@{suffix}");
	[data-dpr = "3"] & {
		background-image: url("../../static/img/@{url}_@3x@{suffix}");
	}  
}